package com.example.chuqq.gpssigninapplication;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.support.annotation.NonNull;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.app.LoaderManager.LoaderCallbacks;

import android.content.CursorLoader;
import android.content.Loader;
import android.database.Cursor;
import android.net.Uri;
import android.os.AsyncTask;

import android.os.Build;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.example.chuqq.gpssigninapplication.model.UserData;
import com.example.chuqq.gpssigninapplication.controller.Rest;

import java.util.ArrayList;
import java.util.List;

import static android.Manifest.permission.ACCESS_COARSE_LOCATION;
import static android.Manifest.permission.ACCESS_FINE_LOCATION;
//import static android.Manifest.permission.READ_CONTACTS;

/**
 * A login screen that offers login via email/password.
 */
public class SignInActivity extends AppCompatActivity implements LoaderCallbacks<Cursor> {

    private static final String TAG = "SignInActivity";
    /**
     * Id to identity ACCESS_FINE_LOCATION permission request.
     */
    private static final int REQUEST_ACCESS_FINE_LOCATION = 0;

    /**
     * A dummy authentication store containing known user names and passwords.
     * TODO: remove after connecting to a real authentication system.
     */
    private static final String[] DUMMY_CREDENTIALS = new String[]{
            "foo@example.com:hello", "bar@example.com:world", "13770641012:580608"
    };
    /**
     * Keep track of the login task to ensure we can cancel it if requested.
     */
    private UserSigninTask mAuthTask = null;

    // UI references.
//    private AutoCompleteTextView mPhoneView;
//    private EditText mPasswordView;
    private View mProgressView;
    private View mLoginFormView;

    private static final String TODAY_FIRST_SIGNIN = "今日首次打卡：";
    private static final String TODAY_LAST_SIGNIN = "今日末次打卡：";

    private TextView mPhoneTextView;
    private TextView mFirstTextView;
    private TextView mLastTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_signin);

        // Set up the login form.
//        mPhoneView = (AutoCompleteTextView) findViewById(R.id.phone);
//        populateAutoComplete();
        mayRequestPermissions();

//        mPasswordView = (EditText) findViewById(R.id.password);
//        mPasswordView.setOnEditorActionListener(new TextView.OnEditorActionListener() {
//            @Override
//            public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
//                if (id == R.id.login || id == EditorInfo.IME_NULL) {
//                    attemptSignIn();
//                    return true;
//                }
//                return false;
//            }
//        });

        Button mPhoneSignInButton = (Button) findViewById(R.id.signin_button);
        mPhoneSignInButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                Log.i(TAG, "mPhoneSignInButton onClick");
                attemptSignIn();
            }
        });

        mLoginFormView = findViewById(R.id.signin_form);
        mProgressView = findViewById(R.id.signin_progress);

        mPhoneTextView = (TextView) findViewById(R.id.phone_text);
        mFirstTextView = (TextView) findViewById(R.id.first_text);
        mLastTextView = (TextView) findViewById(R.id.last_text);

        // 如果没有登录过，则跳转到登录页面
        UserData userData = new UserData(this);
        if (userData.getPhone() == null) {
            Log.d(TAG, "用户未登录，直接跳转到登录页面");
            Intent intent = new Intent(this, LoginActivity.class);
            startActivity(intent);
            return;
        } else {
            mPhoneTextView.setText(userData.getName() + ": " + userData.getPhone());
            mFirstTextView.setText(TODAY_FIRST_SIGNIN + userData.getFirst());
            mLastTextView.setText(TODAY_LAST_SIGNIN + userData.getLast());
        }
    }

//    private void populateAutoComplete() {
//        if (!mayRequestContacts()) {
//            return;
//        }
//
//        getLoaderManager().initLoader(0, null, this);
//    }

    private boolean mayRequestPermissions() {
        Log.d(TAG, "mayRequestPermissions()");

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
            return true;
        }
        final String[] permissions = new String[]{
                ACCESS_FINE_LOCATION,
                ACCESS_COARSE_LOCATION,
        };
        if (checkSelfPermission(ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
            return true;
        }
        if (shouldShowRequestPermissionRationale(ACCESS_FINE_LOCATION)) {
            Snackbar.make(mFirstTextView, R.string.permission_rationale, Snackbar.LENGTH_INDEFINITE)
                    .setAction(android.R.string.ok, new View.OnClickListener() {
                        @Override
                        @TargetApi(Build.VERSION_CODES.M)
                        public void onClick(View v) {
                            requestPermissions(new String[]{ACCESS_FINE_LOCATION}, REQUEST_ACCESS_FINE_LOCATION);
                        }
                    });
        } else {
            requestPermissions(new String[]{ACCESS_FINE_LOCATION}, REQUEST_ACCESS_FINE_LOCATION);
        }
        return false;
    }

    /**
     * Callback received when a permissions request has been completed.
     */
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        if (requestCode == REQUEST_ACCESS_FINE_LOCATION) {
            if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//                populateAutoComplete();
                Log.d(TAG, "ACCESS_FINE_LOCATION permission granted");
            }
        }
    }


    /**
     * Attempts to sign in or register the account specified by the login form.
     * If there are form errors (invalid email, missing fields, etc.), the
     * errors are presented and no actual login attempt is made.
     */
    private void attemptSignIn() {
        Log.d(TAG, "attemptSignIn()");
        if (mAuthTask != null) {
            return;
        }

        // Reset errors.
//        mPhoneView.setError(null);
//        mPasswordView.setError(null);

        // Store values at the time of the login attempt.
//        String phone = mPhoneView.getText().toString();
//        String password = mPasswordView.getText().toString();

        boolean cancel = false;
        View focusView = null;

        // Check for a valid password, if the user entered one.
//        if (!TextUtils.isEmpty(password) && !isPasswordValid(password)) {
//            mPasswordView.setError(getString(R.string.error_invalid_password));
//            focusView = mPasswordView;
//            cancel = true;
//        }

        // Check for a valid phone address.
//        if (TextUtils.isEmpty(phone)) {
//            mPhoneView.setError(getString(R.string.error_field_required));
//            focusView = mPhoneView;
//            cancel = true;
//        } else if (!isPhoneValid(phone)) {
//            mPhoneView.setError(getString(R.string.error_invalid_phone));
//            focusView = mPhoneView;
//            cancel = true;
//        }

        if (cancel) {
            // There was an error; don't attempt login and focus the first
            // form field with an error.
            focusView.requestFocus();
        } else {
            // Show a progress spinner, and kick off a background task to
            // perform the user login attempt.
            showProgress(true);
            Log.d(TAG, "mAuthTask.execute()");
            UserData userdata = new UserData(this);
            mAuthTask = new UserSigninTask(userdata.getPhone(), userdata.getPassword());
            mAuthTask.execute((Void) null);
        }
    }

    private boolean isPhoneValid(String phone) {
        //TODO: Replace this with your own logic
        return phone.length() == 11 && phone.startsWith("1");
    }

    private boolean isPasswordValid(String password) {
        //TODO: Replace this with your own logic
        return password.length() > 4;
    }

    /**
     * Shows the progress UI and hides the login form.
     */
    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
    private void showProgress(final boolean show) {
        // On Honeycomb MR2 we have the ViewPropertyAnimator API, which allow
        // for very easy animations. If available, use these APIs to fade-in
        // the progress spinner.
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
            int shortAnimTime = getResources().getInteger(android.R.integer.config_shortAnimTime);

            mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
            mLoginFormView.animate().setDuration(shortAnimTime).alpha(
                    show ? 0 : 1).setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
                }
            });

            mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
            mProgressView.animate().setDuration(shortAnimTime).alpha(
                    show ? 1 : 0).setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
                }
            });
        } else {
            // The ViewPropertyAnimator APIs are not available, so simply show
            // and hide the relevant UI components.
            mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
            mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
        }
    }

    @Override
    public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
        return new CursorLoader(this,
                // Retrieve data rows for the device user's 'profile' contact.
                Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI,
                        ContactsContract.Contacts.Data.CONTENT_DIRECTORY), SignInActivity.ProfileQuery.PROJECTION,

                // Select only email addresses.
                ContactsContract.Contacts.Data.MIMETYPE +
                        " = ?", new String[]{ContactsContract.CommonDataKinds.Email
                .CONTENT_ITEM_TYPE},

                // Show primary email addresses first. Note that there won't be
                // a primary email address if the user hasn't specified one.
                ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
    }

    @Override
    public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
        List<String> emails = new ArrayList<>();
        cursor.moveToFirst();
        while (!cursor.isAfterLast()) {
            emails.add(cursor.getString(SignInActivity.ProfileQuery.ADDRESS));
            cursor.moveToNext();
        }

        addEmailsToAutoComplete(emails);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> cursorLoader) {

    }

    private void addEmailsToAutoComplete(List<String> emailAddressCollection) {
        //Create adapter to tell the AutoCompleteTextView what to show in its dropdown list.
        ArrayAdapter<String> adapter =
                new ArrayAdapter<>(SignInActivity.this,
                        android.R.layout.simple_dropdown_item_1line, emailAddressCollection);

//        mPhoneView.setAdapter(adapter);
    }


    private interface ProfileQuery {
        String[] PROJECTION = {
                ContactsContract.CommonDataKinds.Email.ADDRESS,
                ContactsContract.CommonDataKinds.Email.IS_PRIMARY,
        };

        int ADDRESS = 0;
        int IS_PRIMARY = 1;
    }

    /**
     * Represents an asynchronous login/registration task used to authenticate
     * the user.
     */
    public class UserSigninTask extends AsyncTask<Void, Void, UserData> {

        private final String mPhone;
        private final String mPassword;

        UserSigninTask(String phone, String password) {
            mPhone = phone;
            mPassword = password;
        }

        @Override
        protected UserData doInBackground(Void... params) {
            return Rest.login(mPhone, mPassword);
        }

        @Override
        protected void onPostExecute(final UserData userData) {
            mAuthTask = null;
            showProgress(false);

            if (userData != null) {
                Log.d(TAG, "打卡成功");
//                finish();
                // TODO 登录成功后跳转到打卡activity。
                // TODO 应该一进来就进入打卡activity，点击打卡时如果没有登录，则跳转到loginactivity重新登录，登录成功后跳转回打卡activity
                userData.save(getApplicationContext());
                mPhoneTextView.setText(userData.getName()+": " + userData.getPhone());
                mFirstTextView.setText(TODAY_FIRST_SIGNIN + userData.getFirst());
                mLastTextView.setText(TODAY_LAST_SIGNIN + userData.getLast());
                Toast.makeText(SignInActivity.this, "打卡成功", Toast.LENGTH_SHORT).show();
            } else {
                // 如果打卡失败，则跳转到登录页面
                Log.d(TAG, "打卡失败，跳转到登录页面");
                Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
                startActivity(intent);
//                mPasswordView.setError(getString(R.string.error_incorrect_password));
//                mPasswordView.requestFocus();
            }
        }

        @Override
        protected void onCancelled() {
            mAuthTask = null;
            showProgress(false);
        }
    }
}

